TM-9-2350-311-10

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 455 of 775

TM 9-2350-311-10

3-6

ARMAMENT AND CAB MAINTENANCE — CONTINUED

3-6.7

Muzzle Brake and Bore Evacuator (11578385) — Continued

a. Removal — Continued

Bore evacuator weighs approximately 210 pounds (95 kg). Use caution to avoid injury to

personnel.

NOTE

•

If T-handle is not available, a screwdriver can be used to depress bearing ball.

•

If bearing ball is stuck or spring appears broken, notify unit maintenance

7

Insert T-handle (3) into setscrew (9) hole. Turn T-handle to engage with threads. Continue turning to

depress bearing ball and spring (not shown).

8

Insert pry bar (11) into hole (12). With bearing ball (not shown) depressed, unscrew bore evacuator (10)

and slide it forward to remove from cannon tube (6).

NOTE

Use rag (item 35, Appx D) to catch ten check balls when sliding valve ring forward.

9

Slide valve ring (13) forward and remove from cannon tube (6) along with 10 check balls (14).

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